Forming apparatus



July l2, 1932. J. MAIER FORMING APPARATUS Filed March 23, 1931 f5 Sheets-Sheet J J B .w1 mm R n@ www t l Mm. (a RN v R. MN /5 H mk sw mn "W, o www" Y x u 4,. n O n mb l l MM I# h. D mmvx m.\ l Il! m. y o VV, Q S 1U uw /fm/w R/ QN Q S /fww w E m .mm1 www@ m@ o ,Q LW @QN mm n MQW. .mw RQ um .mi @A y k t l um. Wm. QN m. L l.. m l \m.\ iwii ||1l \l\ i| ll um K v N E mw m Q ,W Mm/. .n Lalll'l- III dl ||1P|| *lill .l n o mw mm w R v July 12, 1932. JY MAlER 1,866,895

FORMING APPARATUS Filed March 23. 1931 ."5 Sheets-Sheet 2 July 12, 1932 J. MAIER FORMNG APPARATUS Filed March 25, 1951 3 Sheets-Shee 5 i mlm?.

Patented July 12, 1932 NETE@ STATES FORMING APPARATUS Application filed. March 23, 1931.

This invention relates to forming apparatus, and with regard to certain more specilic features, to forming apparatus for convertiug more or less roughly formed pieces into smoothly formed pieces, the operation performed being known in the metal arts as spinning.

Among the several objects ot the invention may be noted that the provision of spinning apparatus wherein pieces of predetermined, more or less rough form may be quickly and automatically shaped into a congruent smooth form; the provision of apparatus oli' the class described which shall increase the rate of production and safety ot operation and effect a more uniform product; and the provision of appzl atus ot 'this class which is comparatively simple and which is adaptable tov opcrate according to various shapes by making only slightly changes and/ or adjustments. @ther objects will be in part obvious and in part pointed out hereinafter.

`-Ihe invention accordingly comprises the elements and combina-tions oli' elements, features of construction,` and arrangements volf parts which will be exempliiied inthe structure hereinafter described, and the scope of the application oi which will be indicated in the following claims.

ln the accompanying drawings, in which is illustrated one of various possible embodiments of the invention,

Fig. l isa fragmentary front elevation showing in operating position the spinning mandrel elements of the machine;

Fig. 2 is a top plan View of Fig. 1;

Fig. 3 is a vertical section taken on line 3M-S of Fig. il, showing a di'erent positioning of parts;

Fig. l a horizontal section taken on line LLL-l ot 3 g Fig. 5 is a view similar to Fig. 1 but being on an enlarged scale and showing certain portions broken away and in an alternate receded position of certain parts;

Fig. 6 is fragmentary view similar to Fig. showing anotner alternateand further receded position of certain part-s;

Fig. i" is an enlarged vertical section taken on line 7-7 ol' Fig. 3; and,

Serial N0. 524,463.

lfig. 8 is an enlarged sectional View showing anA valternative construction.

'Similar vreferencey characters indicate co1'- responding parts vthroughout the several views ofthe drawings.

ln themetalforming art it: is customary to stamp and/or draw articlesfrom metal, such that certain'shapesof surfaces are forced-to assume other shapes,whereby the metal in the finalfformincidentally becomes crinkled or ridged or :turrowed in an'undesirable Inanner. It' is customary toA eliminate these ridges or turrows or the like by .spinning the formed metal so Vthat the ridges are eliminated. llirsuthe article, a cooking utensil for example, is mounted on a mandrel or chuck .and then a spinning tool is wipedover the form by applying pressure manually. The wiping action under pressure causes the metal to be spun into'a smooth "form thus providing a more attractive and mechanically improved surface.

VReferring now more'particularlyto Fig. 1, there is showna front elevation of my improved machine for automatically effecting w theabove result. 'It' comprises a frame 1 including a head stock 3 driven' from a suitable source through a 1 stepped pulley 5. The frame 1 also includes alongitudinally movable tail stocli'7.

Yliteferring' to. F ig. '15, it will be seen that the head stock has fastened. thereto a chuck@ the shape of Which is approximately that of the article` 11 to be spun. 'Howeven the endwise depth of the chuck 9 is slightly less than the S article 11, in order that the edge 13 of said article may overhang. the chuck 9, to be engaged by a slidably moving collar 15, 'the purpose of which collar 15 -is to force the article 11 from the chuck 9 afterspinning. The collar 15 is slidable-on a. bearing 17 of the head stock 3.

Control of the sliding action of the collar 15 is eiected from a shifter fork 19 which is attached to a shifterbar 2,1,thel latter being carried in bearing 23, (see also Fig. 1) .y The shifter rod 21 receives onestroke ol its reciprocating motion through a lost-motion, sliding connection with a yoke-25. `The lost motionconnection comprises a pivoted dog 27 Gli mounted on the yoke 25. The shifter rod 21 carries a notch 29 adapted to be cooperated with by the tail end of said dog 27. The weight of said tail end of the dog 27 overbalances the weight of the other end thereof, said other end including a roller 31, so that as the yoke 25 slides along the shifter rod 21 and the dog 27 approaches the nut 29, the tendency will be for the dog to drop into the notch 29. This will cause the roller 31 to be raised and also cause the bar 21 to be driven to the right, if the direction of motion of the yoke 25 is then toward the right. This action causes the fork 19 to drive the collar 15 to the position shown in Fig. wherein the article 11 is driven from its partially clutched position on its chuck 9. From the position shown, the article 11 drops down into the Waiting hands of the operator.

Before the time that the collar becomes positioned as shown in Fig. 5, it is desirable that the rod 21 have its motion cease, the function of a collar 15 having been performed. Tn order to accomplish this, a knock off cam 33 is used to engage the follower 3 1 which is moving in a translatory manner beneath the cam. Engagement is effected at the proper time for stopping movement of the collar 15 after the article 11 has been loosened from the chucl The contact between the cam 33 and the Wheel 31 causes the dog 27 to lift out of the notch 29. Thus further movement by the yoke` to the right will not result in movement of the rod 21. Hence without further moving the rod 21, the yoke 25 will travel onward to the right from its solid line position (Fig. 5) in order to accomplish other functions. An extreme right hand position of the yoke 25 is shown in Fig. 6.

The other function of the yoke is to reciprocate the tail stock 7. Said tail stock 7 is normally forced to take up a right-hand position under action of a return spring 35, said spring reacting between the frame 1 and the fixed collar 37 on the tail stock 7. The yoke 25 is rigidly attached to the tail stock 7 (see clamping bolts 39). l/Vhen the tail stock 7 is moved through a stroke equal to the stroke of the movement of the yoke 25 (and this is enough to effect a complete clearance from the work),the hand of an operator can be positioned to take the work as it drops from the chuck 9. The throw is determined at the left end (Fig. 1) by the requirement that a head 31 be driven into contact with the bottom of the work 11 so that it is driven into po sition on the chuck 9, as tightly as shown in Fig. 1 and more tightly than in Fig. 5.

The head 41 is slidably mounted longitudinally of the tail stock 7 and behind it is placed a compression spring 43 so that the left hand end of the stroke of the tail stock 7 need not be so closely determined. Pressure is thus also provided to hold the article 11 on the chuck 9. If the motion of the tail stock overruns the left hand requirement, the spring 43 will make up the difference. rThus the spring 43 causes the head 41 to be contacted with the bottom of the article 11. Tn order that a proper frictional Contact may be effected a felt cover 45 is placed on the place of the head 41. The spring 43 is backed up by a suitable thrust bearing 47. The spring the rear end 49 of ahead 41 and the head el are all rotatable when the head 41 with the work, the two rotate togetl r respect to the tail stock 7, the latter ben j: vented from rotating by the clamped ,l V

From the above it will be seen that the lefthand stroke of the yoke 25 effects driving of the head 41 against any article which may be positioned on the chuck 9. During its righthand stroke the head 41 is taken from article. The article does not immediately fall oi'f, because of the wedging action of the chuck in the work. Next, the dog 27 falls into the notch 29 and drives the bar 21 to the right whereupon the collar 15 pushes the article from the chuck 9 by engaging the then piol jecting edge of the article. Thereafter, the wheel 31 engages the cam 23 so that further movement of the rod 21 is prevented. lifter this, the article 11 drops from the chuck 9. The chuck 9 is then ready for the applicant of the next article to be operated upon.

The yoke 25 is caused to reciprocate in the direction of the shifter rod 21 by means of a connecting rod 51 which attaches to a bell crank 53, the latter passing through a bracket 55 mounted on the frame 1. It will be seen that the connecting rod 51 attaches to one arm of the bell crank. The other arm of the bell crank is connected with a rocker arm 57, this being done by way of a connecting rod The rocker arm 57 is normally drawn counter-clockwise by a spring 61 and also by the aid of said return spring 35 acting` on the tail stock 7 to which the linkage 51, 53.l 57 and 59 is connected. In short, both springs 35 and 61 function as return springs. The rocker arm 57 is pivoted as shown at numeral 63, the pivot 63 being on the frame 1.

The outer end of the rocker arm 57 is provided with a follower roller 65 which bears against a cam 67 havingl a proper shape for causing the linkage described to move the tail stock 7 in a reciprocating manner from the position shown in Fig. 1 through the position shown in Fig. 5 to the position shown in Fig. 6. Thus is the tail stock 7 reciprocated.

The cam 67 is keyed to a cam shaft 69 which is mounted in a bracket 71 attached to said frame 1. is directly in said frame 1. The cam shaft is driven by a worm wheel 73 keyed tl'xereto, the latter being meshed with a worm 7 5 driven from a shaft 77 and a stepped pull-ey 79. lt will be understood that the said pulleys 5 One bearing of the cam sliaf and 79 may be driven from the same or separate sources of power. i t

Above the cam 67, on the cam shaft 6.9i, is

keyed a second cam 811 operating upon follower roller 83, the latter being carried on a rocher arm The rocher arm is pinned to the frame 1 at a pivot 87 and carriesv a roller 83 which is held against the cani 1 by action of a return spring S9. At' the outer and] the rocherv arm- 815 is provided with a shoe 91 which has a horizontal U-shape which slidably engages with an arcuateportion 93 of the frame 1. The radius of curvature of the arc of said portion 93 extends to the pivot 97. Hen-ce operation ofthe rocher 85 under action of the cani 31 results in the shoe 9.1 oscillating bach and forth along the arcuate edge 93 ofthe frame 1, the U-shape of the shoe 91 enfo-lding the edge 93.`

The shoe 91 carries a vertical guide 95V which reciprocally carries a slider 97 normally pulled downwardly by a spring 99. Horizontally pinned tothe slider 97 is a bearing bloclr 101, the latter being slidably mounted around the end` 103501' a tool bar or support 105. The tool bar 105 is universally mounted at a ball and socket joint 107, the stationary member109 of said joint being fastened to the frame 1.` F rom the foregoing, it will be seen that the tool bar 105 is given a lateral oscillating motion (see Figs. 2 and Y i 1n order that the general curvature or contour of the article 11 may be followed by the spanning tool 111 carried at the end of the bar 105, `there is provided the following mechanism Above a guardi` 113. which protects against injury from the worm Z5 and wheel 7 3, there is mounted on the cam shaft69v a cylinder type cam 115 which` operates a roll follower 11C7 carried on a vertically movable slider 119i. The slider 1191v is carried in a second slider comprising a split sleeve 121, also slidable vertically and carried in a vertical guide 123 attached to said frame 1. The guide 123 is also split. The split portions of the outer movable sleeve 121 and immovable guide 123 are shown at numeral 125, the purpose of the .split feature being to accommodate said follower 117 and a part of the periphery of the cam 115.

1n order that motion Inayy be transmitted from the follower assembly 117, 119 to the outer slider 121tl1ere is affixed through said slider 121 a rotatable pin 127? which carries a set of normally fixed, but adjustable contact cams 129 (Fig. 7) bearing against the follower slider 119. Hence it: will be seen that the slider 121, through the cams 129,. is responsive to vertical movement ofthe follower-'117 caused by the cam 115. The purpose of introducing the cams 129 is to provide means for changingy the relative positions of the slider 121 and slide-r 119 whenthe latter` drivesV the former. The relative positions are, changed by rotating the shaft 121, whereby' the canas 129 are' rotated. Further detailsv of this adjustment will be clarified hereinafter..

Mounted on the upper end of the slider 121 is a cylinder type of camV platev 131 which will be seen to be movable vertically with the Y vertical movement. of the slider121. On the tool bar 105 is: mounted a roller follower 133 which cooperates with the cam 131. The toolbar 10.5 therefore, has a periodic movement in a vertical direction caused by vertical movement ofthe cam 131 asf said cam is controlled by the cylinder cam 115. Thisv movement is: up and down once per cycle of action of. the machinetalren asa whole.

The tool bar 105 is given another component of vertical control by the outline given to the cam 13,11 as the lateral oscillation of the bar 105 is executed under action of the shoe 91, the follower 133 of the bar 105 being held to the cani 131V by the return spring 99'. The cam 131 is readily replaceable by others: accommodating the motion of the tool- 111 to the specific shape ofV article 11 to be operated upon.

vhe working face 135 of the tool 111 is prepared to provide a smooth surfacewhen pressedl into. contact with the metal to be spun. and it is therefore desirable that approximately the. same region ofv Contact be maintained on the tool.. It is therefore desirablefthat the tool shaft 10,5 be given a counterclockwise movement as' it wipes parallel to the surface of the product 1'1 from the right toward the left (Fig. 1).` This is accomplished by. a bridle linkage 4t comprising a clamp 137 on the tool' bar 105:. This clamp has an extension 139 slidable and rotatable a bearing 141, the latter having affixed thereto. a cross. bearing 14:3 which in turn. is rotatable and slida-ble `on a gud-geen 145-. rEhe gudgeon 1115. is adju-stably but rigidly held to a vertical support 147, this: being accomplished' by means of an attachment piece 1493-. The support 14T is heldin a bra-cket 151 attached to. said 1`. it will? be see-n that as the tool shaft 105 is given the universal movement above described, that it moves relatively tothe fixed gudgeon. 1ttherefore travels closer to and farther away from said. gudgeon7 this: action being permitted by the telescoping action of the eX'- tension 139.' within bearing 141. The bearing 141 can rotate with the second bearing 1131 on the gudgeon 145 and? thus: causes the tool shaft. toV execute said desired counterclo'clrwise rotation (Fig.V 1);'V as it moves` over the article 11.

Intlfie. foregoing' and what follows,- it should be noted that the tool 1'11 is: depressed when the follower 133 rises and thatl it. pro.- ceeds: to.l the right when the shoe` 9'1 isdriven izo counterclockwise rotation of the tool 1111s effected while the Vtool is traveling'from right to left and up. This is because the tool bar 105 has conical movement with the center 6 as apex, and the result is that the general curvature of the cam 131 is made opposite to the curvature of the article 11.

It is desirable that a safety feature be used, so that should the tool 111 on its working stroke cause a tear in the material of the article 11, such as caused by an imperfection in the metal of the product, the operation of the mechanism will not be delayed. In such an event, the tool 111 should be immediately-lifted from the article 11 without permitting the tool to complete its cycle of spinning operationper se but permitting the device as a whole to complete its cyclic action. The purpose of the cams 129 on the pin 127 is to effect this safety feature, for when, as shown in Fig. 3 the cams 129 are turned -to their positions in which they give the highest elevation of the cam 131 in respect to the follower 121, then the tool 111 is depressed to a position tangent to the surface of the product 11, provided it is starting on a working stroke, for then the follower 117 is raised. By turning the cam 129, the spring 99 and weight of the parts causes the slider 121 to be depressed with respect to the slider 119 and thus depresses the rear end ofthe tool bar 105 and raises the tool 111 per se. Such raising of the tool spaces it from the work, as shown in Fic'. 1. The turning of the cams 129 may be effected instantaneously by an operator from a lever 153 placed where he stands in removing and placing the article 11 on the chuck 9. A connecting shaft 163 has universal connection 155 with the rear end of the lever member 153 and a universal connection 157 with the said pin 127. Hence the safety lifting feature for the tool 111 is under immediate control of the operator of the machine. As soon as he discovers any imperfection in the operation on the working stroke, such as tearing or cutting, he merely turns the lever 153 which causes the tool 111 to be raised from the article 11.

The operation of the machine is as follows The tail stock 7 is assumed to be in its extreme right-hand position shown in Fig. 6. This gives the operator ample clearance in which to apply the article 11 to the chuck 9. It is tobe understood that the chuck 9 is spinning all the while.. Pressure on the article 11 causes the rim 13 to push back the collar 15 enough to effect a slight gripping action between the sloping surface of the chuck 9 and the inner surface of the hollow member 11. The tail stock 7 then advances through the position shown in Fig. 5 to that shown in Fig. 1, thereby'forcing the resilientl mounted head 41 against the bottom of the work 11. Thus the work 11 is Vpositively held in engagement with the chuck 9 and is caused to rotate therewith.

Vas the cam 131.

under action of the cam and assumes a slight counterclockwise rotation.

. The working stroke is effected by combined actions of cams 115, 131 and 81, the cam 81 providing the lateral movement and the cams 115 and 131 the normal movement. The normal movement provided by cam 115 is to set the tool to and from the surface of the work and the normal movement of the cam 131 is to cause it to follow the particular curvature required. During this operation the shoe 91 moves clockwise (Fig. 2).

On the working stroke of the tool 111, the cam 115 is positioned such that the follower 117 is highl and thus the cam 131 is high and in fixed position. Thus it will be seen that the outline of cam 131 is responsible for the tool bar 105 beingoscillated normally so as to cause the tool to fo-llow the outline of the work as the bar 105 swings laterally.

When' the tool 111 has reached the edge 113 of the work it is advisable that it be lifted for the return stroke and this is effected by the cam 115 having its low portion permit dropping of the follower 117 which causes the cam 131 to drop and thus the return movement of the tool 111 has a path which is elevated from the work but substantially parallel to it, because the rear end of the tool `bar 105 is merely depressed with cam 131 while it rides back on said cam 131. It rides back under return action of the shoe 91 moving counterclockwise (Fig. 2).

In Fig. 3 the tool is shown operating upon a working stroke. The roller 133 is moving away from the reader. Upon the return stroke, the follower 117 will be down as well The roller 133 is then moving toward the reader on the depressed cam 131.

If, during the action portrayed in Fig. 3, in which the roller 133 is receding from the reader on its working stroke along cam 131, it be found necessary to operate the safety device, the result will be that the pin 127 be turned and the cam 131 dropped so that the tool is lifted from its work. The safety feature can be operated without interrupting the operation of the machine. vWhen the tail stock 7 withdraws, the operator can take the g damaged part off in the same or similar manner as he would a finished piece.

The withdrawing operation of the tail stock 7 is caused byv return movement of the yoke 25 which proceeds some distance to cause withdrawal of the head 41 as shown in Fig. 5. At a predetermined point, the dog 27 has dropped into the notch 29 and causes al righthand movement of the bar 21, which, through the bracket 19, causes the collar 15 to Contact with the edge 13 of the work 11, thus forcing the work 11 from the truck 9 and causing it to drop into the waiting hands of the 0perator. At a slightly subsequent period, the follower 31 of the dog 27 engages the cam 33 so as to permit further right-hand movement of the yoke 25 without causing further right-hand movement of the collar 15. Thus the dog- 27 is cleared from the notch 29. IThereafter, the yoke 25 proceeds further to the right and further withdraws the tail stock 7 so that the head d1 is withdrawn into the Fig. 6 position, thus providing ample clearance for the operator to get at the article 11 and also providing enough room for the work to drop @if of the truck 9. The machine, without being stopped is then Vprovided with `another piece of work 11 by lightly pressing the nent article such as 11 against the truck and thereafter the cycle is repeated.

The mechanism ior causing the tool 111 to follow the contour of the article 11; as shown in detail in Fig, 3, is adapted for the spinningl of metal objects 11, having accurate and uniform thickness, throughout the part to be worked. If articles 11 of uneven thickness are worked using this modification the tool 111, being firmly held against the article 11, tears or gouges any portions which are of a greater thickness than the tool 111 is set to work.

For working articles 11, having a non-uniform thickness, I provide the modification of the mechanism, shown in Fig. 8. In this modification the cams 129 are moved by the follower 117, through resilient means, described as follows:

The vertical open sided guide 123, is used to guide the guiding sleeve 121 of Fig. 3, but the slider 119 carried in the sleeve 121 does not come directly into contact with the cams 129, as in Fig. 3. Driving contact is eifected by way of a stud 201, threaded into the slider 119, a bearing 204, threaded onto the stud 201, a collar 205, threaded onto said bearing, resilient springs 213 reacting against said collar, and a sleeve 203, acting between said springs 213 and said cams 129, and sliding on bearing.

A lock-nut 207, locks said stud 201 in position. Recesses 211 in said sleeve 203 guide the springs. liecesses 209 are provided for a Spanner wrench for adjusting the bearing on the stud 201.

Thus the motion of the roller 117 is transmitted to the slider 119 from the slider to the stud 201, to the bearing 204 and collar 203. The motion is transmitted to the collar, by the resilient springs 213 to the sleeve 203, and to the cams 129. If now articles 11, having uneven thickness are worked, the springs 213 allow the tool 111 to resilently pass overthe thicker places rather than to cause the tool li to gouge the metal.

The action of the mechanism shown in Fig. 8, is otherwise identical to that of Fig.

3, the primary difference in construction being in the resilient feature .interposed between the roller 117 and the cams 129.

Advantages of the machine are that replacement of the cam 131 can be readily effected, A cam 131 with a new curvature will permit accommodation to a new shape of article 11, such as a shape with beads or the like in it.

The machine also has the advantage that upon the return stroke of the tool, it is automatically lifted from the work and substantially clears the same. Hence, the same cam may be made use in returning the tool as was used in forcing it through its working stroke. Also, the unloosening of the article 11 from the truck 9 is delayed until the tool has well cleared to the rear of the work.

The safety feature which provides means for lifting the tool at any point of the working stroke without .stopping the machine is of a great advantage in saving time of operation, because the machin-e needs not to be stopped when eifecting a safety operation.

The turning action effected by the tool as it goes through its working stroke comprises an advantage in that it simulates the action given to a hand operated tool, yet work can be turned out at automatic speed and with substantially equal increments of advance of the tool over the work so that an exceedingly smooth and regular finish is provided.

In view of the above, it will be seen tha@ the several objects of the invention are achieved and other advantageous-results attained.

As many changes could be made in carrying out the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or yshown in the accompanying drawings shall. be interpreted as illustrative and not in a limiting sense.

I claim:

1. Forming apparatus comprising means for rotating an article, a tool, means for mounting said tool for universal movement, automatic means constraining said tool to move substantially along an outline of the surface of said article during a working stroke of the tool, and spacedly from said outline during a non-working stroke and emergency means for lifting said tool from said outline when at any point thereon without interfering with the cyclic action of said automatic means when effected either by normal operation or through said emergency lifting means.

2. Forming apparatus comprising a rotary chuck adapted to receive an article thereon, a tail stock, a head on said stock adapted to engage said article to hold it to said chuck, a movable member adapted in one position to permit positioning of said article on said chuck and in another position to force said article from said chuck, means for moving said member inclu-ding a shifter, reciprocating means fastened to the tail stock and driving the same, said last-nained reciprocating means having a lost-motion engagement with said shifter, means for temporarily driving said shifter from said reciprocating means when said tail stock is receded from the article, and cam-operated means for releasing the lost-motion connection.

3. Forming apparatus comprising a rotatable chuck, adapted to receive articles to be operated upon, movable means for pressing articles from said chuck, shifter means for operating said movable means and reciprocating means slidable with respect to said shifter means and having a lost-motion engagement with the same for temporarily operating said sliiftermeans during a predetermined direction of stroke.

4. Forming apparatus comprising a rotatable chuck, adapted to receivearticles to be operated upon, movable means for pressing articles from said chuck, shifter means for operating said movable means and reciprocating means slidable with respectJ to said shifter means and having a lost-motion engagement with the same for temporarily operating said shifter means during a predetermined direction of stroke, said connecting means comprising a notch on the shifter means, a dog on the reciprocating means adapted to drop into the notch and a cam cooperating witli said dog to remove the same from said notch at a predetermined time, said dog being operable to positively drive a shifter means in one direction only.

5. A mounting for a forming vtool comprising a universal joint, a tool holding support constrained by said joint and holding said tool and bridle means adapted to rotate said. tool substantially along its longitudinal axis when it is given movement from said bar, said bridle means comprising a fixed gudg'eon, a rotatable bearing thereon, and an extension fixed with respect to and eX- tending from said support and slidable in said bearing.

6. Forming apparatus comprising a tool support, means for mounting -said support for universal movement, automatic'means for oscillating said support in a substantially horizontal direction, automatic means for providing a second component of movement in a normal direction, and manually operable means for effecting al normal movement of said support independently of said automatic meansV for effecting said normal movement.

7. Forming apparatus comprising a tool support, means for mounting said support for universal movement, automatic means for oscillating said support in a substantiallyliorizontal direction, automaticmeans for providing a second component of movement in a normal direction, manually operable means for effecting a normal adjustment of said support independently of said automatic means for eecting said normal movement and bridle means connected with said support adapted to effect rotation of said support substantially along the longitudinal aXis of said tool as the support is universally moved.

8. Forming apparatus comprising a tool U movement and bridle means connected with -8-5 said support adapted to effect rotation of said support substantially along the longitudinal anis of said tool as the support is universally moved, said bridle means comprising a fixed gudgeon, a rotatable bearing thereon, and an extension fixed with respect to and extending from said support and slidable in said bearing.

9. Forming apparatus comprising a universal movable tool support, automatic means for oscillating said support with a substantially horizontally component of movement, automatic means for oscillating said support with a substantially vertical component of movement, a vertically movable cam associated with said second-named automatic means having an outline of predetermined formation, and means for adjusting the relative position of said vertically movable cam in said second-named automatically movable mechanism, said vertically movable cam being changeable and bridle means adapted to provide another component of movement for said support.

10. Forming apparatus comprising a tool support, means for moving said support with a normal component comprising a cam, a follower for said cam, a slider associated with said follower, said slider operating in a second slider, and an adjustable connection between said second and said first-named sliders.

l1. Forming apparatus comprising a tool support, means for moving said support with a normal component comprising a cam, a follower for said cam, a slider associated with `said follower, said slider operating in a second slider. and an adjustable connection between said second and said first-named sliders comprising a shaft in the second slider and at least one cam thereof engaging the first slider.

l2. Forming apparatus comprising a tool support, means for moving said support with a normal component comprising a cam, a follower for said cam, a slider associated with said follower, said slider operating in a second slider, and an adjustable connection between said second and said first-named sliders comprising a cam shaft in the second slider and at least one cam thereof engaging the first slider, and manually operable means for operating said adjusting cam, said sliders being operable automatically to reciprocate. 13. Forming apparatus comprising a tool support, means for moving said support with a normal component comprising a cam, a follower for said cam, a slider associated with said follower, said slider operating in a second slider7 and an adjustable connection between said second and said first-named sliders comprising a cam shaft in the second slider and at least one cam thereof engaging the rst slider, manually operable means for 2o operating said adjusting cam, said sliders being operable automatically, and a removable cam located between said second slider and the tool support.

In testimony whereof I have signed my name to this specification this 10th day of March, 1931.

JOHN MAIER. 

